appendix: Use standard assembly format for sw

Configuration String -> Device Tree

Clarify that trigger comparisons are unsigned.

Issue #129.

Issue #113.

Add table of Abstract Command Types

Issue #73

Tighten up introduction lists.

DMI does not have an Error response

Clarify dpc contents.

Fix and speed up build.

Trusty needs a PYTHONPATH addition to find sympy.
Drastically sped up the build by only installing the LaTeX packages we
actually need.

Add version constants for "not compatible".

Should help with Issue #62.

Addresses Issue #40

There was some confusion about this. See
https://groups.google.com/a/groups.riscv.org/forum/?utm_medium=email&utm_source=footer#!msg/debug/o9buamtml2s/a4r4qwBTFAAJ

Use LL instead of L for 64-bit constant suffix.

Quick Access error clarification

Clarify when you would get error halt/resume

See https://github.com/riscv/riscv-openocd/pull/81

Clarify implications of CSR read, write, halt

clarify DCSR.cause